Company lists · Data refreshed November 2026

Top 23 Web application testing services based in the United Kingdom

RevenueBase identified 170 company matches for web application testing services associated with the United Kingdom as of November 2026 and tracks 5,147 professional contacts across them, including 973 with verified work emails. London is the largest hub.

This list covers company matches for web application testing services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
170Companies
5,147Contacts tracked
973Verified emails
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The 23 largest web application testing services based in the United Kingdom

Ranked by team size
Top 23 of 170 company matches for web application testing services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000426 contacts →

Exact match

“At Resillion, we're more than just a global leader in quality engineering, testing, and cyber security – we're your dedicated partner from the start of your project to its…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchEdinburgh, United KingdomHQ recorded Nov 6, 2026201-500298 contacts →

Exact match

“We help CTOs, Programme Directors, and Engineering Leaders deliver complex technology change safely, on time, under control, and at sustainable cost.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCheltenham, United KingdomHQ recorded Nov 6, 202611-50100 contacts →

Exact match

“Digivante helps ecommerce brands unify their QA, UX, & UAT into one seamless solution; improving speed, insight, and conversion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCheltenham, United KingdomHQ recorded Nov 6, 202611-5088 contacts →

Exact match

“BugFinders is a world wide leading crowdsourced software testing company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchEastbourne, United KingdomHQ recorded Nov 6, 202611-5050 contacts →

Exact match

“Zoonou is one of the UK’s leading software testing companies; we’re a Certified B Corporation® and 100% employee-owned.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchDoncaster, United KingdomHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“At Kudos QA, we are committed to delivering top-tier software and gaming quality assurance, ensuring optimal performance, reliability, and user satisfaction across diverse…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWirral, United KingdomHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“For more than 45 years, LDRA has developed and driven the market for software that automates code analysis and software testing for safety, mission, security- and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“CalibreCode provides on-demand and integrated Quality Assurance Solutions for Product Management & Engineering teams.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBasingstoke, United KingdomHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“Step into the future of testing today!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBrighton, United KingdomHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Cell Software is an expert provider of software solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBlisworth, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“We are the UK’s leading provider of automated testing solutions for electronic and electrical products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchStaines, United KingdomHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“At Experior we believe the user experience is everything.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchCanterbury, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“SMQA is an established IT Consulting services company specialised in Quality Assurance, Performance Engineering and DevOps helping clients providing precise, scalable, quality…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 6, 20261,001-5,00011 contacts →

Exact match

“Catalis comprises two companies: Curve Games and Testronic Laboratories.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSouth-west England, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Emerge QA are a team of QA testing veterans, with team members working within the industry over the last 10 years from indie titles to games!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLeeds, United KingdomHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“A team of innovative Technology Leaders and Quality Engineers, we take a solution-led approach to help our clients engineer quality into all stages of their product lifecycle.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchIlford, United KingdomHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Low Code, Enterprise Grade, end-to-end Test Automation Software built for progressive businesses #WebTesting #APITesting #MobileTesting #FunctionalTesting”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-108 contacts →

Exact match

“TSG Training Limited is a leading, specialist provider of Software Testing Training and Certification.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchManchester, United KingdomHQ recorded Nov 6, 2026501-1,0007 contacts →

Exact match

“NGS Secure is now NCC Group NCC Group is a leading global information assurance firm, providing freedom from doubt that all critical material is available, protected, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Appsecco Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Nov 6, 20261-106 contacts →

Exact match

“see:detail is an award winning independent software testing company that provides sustainable employment for people with an autism spectrum condition or Asperger's syndrome.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“LoadFocus is a leading cloud-based performance testing platform that ensures your digital solutions perform at their best.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchEdinburgh, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Founded in 2011 by industry veteran Nick Barrett, Proper QA is a quality assurance service provider, specialising in quality assurance testing and the creation of innovative test…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 23 of 170 web application testing services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 973 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Web application testing services based in the United Kingdom at a glance

As of Nov 6, 2026
18.9%Verified-email coverage
30.3Average contacts per company
1-10Median size (employees)
37.1%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
104
11-50
38
51-200
17
201-500
3
501-1,000
2
1,001-5,000
2
5,001-10,000
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 170 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “web application testing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 973 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Web application testing services by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “web application testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many web application testing services are there based in the United Kingdom?

RevenueBase identified 170 company matches for web application testing services associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Resillion tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most web application testing services?

London leads with 63 company records, followed by Manchester (9) and Leeds (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 973 professional contacts with verified work emails tracked across these 170 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.